A bidirectional flow valve structure with redundancy protection function

Abstract

The utility model relates to flow valve technical field especially, it relates to a bidirectional flow valve structure with redundancy protection function, including outer valve body, the both sides of outer valve body are provided with A flow direction channel, B flow direction channel, A flow direction channel, B flow direction channel all with the inside communication of outer valve body, the contact surface fixed connection of outer valve body inner wall and A flow direction channel has B flow direction sealing cone valve. This bidirectional flow valve is through setting A / B bidirectional independent main adjustment and redundancy adjustment combination mechanism, in normal operation, A to the adjustment nut and B to the adjustment nut accurate adjustment corresponding flow direction overflow pressure, when main adjustment nut appears to jam silk and so on fault, operating personnel can realize "forced synchronous regulation" through the elastic potential energy of torque compensation spring with vice adjustment nut A9, can bypass the fault main nut directly adjust spring two compression amount through vice adjustment nut, need not stop to maintain overflow pressure stability, avoid traditional valve fault leading to system pressure disorder, satisfy high reliability scene demand.

Description

Technical Field

[0001] This utility model relates to the field of flow valve technology, and in particular to a bidirectional flow valve structure with redundant protection function. Background Technology

[0002] Two-way flow valves are widely used in hydraulic systems, fluid transport and other fields. Their main function is to regulate the overflow pressure of fluids flowing in different directions (such as A direction and B direction) to meet the system's requirements for flow and pressure control.

[0003] Currently, conventional bidirectional flow valves typically only have one set of main regulating nuts to adjust the overflow pressure in each flow direction. When the main regulating nut becomes stuck or stripped due to long-term use, the bidirectional flow valve will be unable to effectively regulate the overflow pressure, leading to abnormal pressure control of the entire fluid system and affecting the normal operation of the system. Although some bidirectional flow valves have made some improvements in sealing structure, such as using special sealing rings to enhance sealing performance, they lack effective redundant protection design for the core overflow pressure regulating mechanism. In scenarios with high system reliability requirements, bidirectional flow valves with a single regulating structure cannot guarantee the continuous and stable operation of the system, thus failing to meet the needs of industrial production for high reliability and low maintenance costs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bidirectional flow valve structure with redundant protection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A bidirectional flow valve structure with redundant protection function includes an outer valve body. An A-direction channel and a B-direction channel are provided on both sides of the outer valve body. Both the A-direction channel and the B-direction channel are connected to the interior of the outer valve body. A B-direction sealing cone valve is fixedly connected to the contact surface between the inner wall of the outer valve body and the A-direction channel. A threaded groove is provided on the inner wall of the B-direction sealing cone valve. An A-direction adjusting nut is threadedly connected to the threaded groove. A first gear is fixedly connected to one end of the A-direction adjusting nut. A second gear is meshed with the outer surface of the first gear through a bidirectional meshing gear. A secondary adjusting nut A is fixedly connected to the end of the second gear. An annular torque compensation spring is provided in the middle of the bidirectional meshing gear. The end of the A-direction adjusting nut is connected to a steel ball seat via a spring. The steel ball seat has a slot on the side away from the spring, and an A-direction sealing steel ball is installed in the slot.

[0006] Preferably, the side of the B-flow direction sealing cone valve is connected to a spring seat via a spring two, and a B-direction adjusting nut is fixedly connected to one side of the spring seat. The inner wall of the outer valve body is provided with a threaded groove, and a secondary adjusting nut B is threadedly connected to the threaded groove.

[0007] Preferably, a telescopic push rod is fixedly connected to the side of the secondary adjusting nut B near the B-direction adjusting nut. A positioning hole that mates with the telescopic push rod is provided on the side of the B-direction adjusting nut. The end of the telescopic push rod that can retract axially and is away from the secondary adjusting nut B passes through the positioning hole and is connected to one side of the spring seat.

[0008] Preferably, the outer wall of the outer valve body is provided with a sealing groove and a sealing slot, and an annular pressure detection chamber is provided between the sealing groove and the sealing slot, and a miniature pressure sensor is provided in the pressure detection chamber.

[0009] Preferably, the sealing groove is filled with an O-ring, and the sealing groove is filled with a metal-coated sealing ring.

[0010] Preferably, torque sensors are provided on the inner walls of both the A-direction adjusting nut and the B-direction adjusting nut.

[0011] The beneficial effects of this utility model are: This bidirectional flow valve features a combination of independent A / B bidirectional main regulating and redundant regulating mechanisms. During normal operation, the A-direction regulating nut and the B-direction regulating nut can precisely adjust the overflow pressure in the corresponding flow direction, while a torque sensor monitors the torque in real time to ensure normal operation. When the main regulating nut malfunctions, such as jamming or slippage, the operator can achieve "forced synchronous regulation" by using the secondary regulating nut A9 with the elastic potential energy of the torque compensation spring. The secondary regulating nut can bypass the faulty main nut and directly adjust the spring compression, maintaining stable overflow pressure without stopping the machine. This avoids system pressure abnormalities caused by traditional valve failures and meets the requirements of high reliability scenarios.

[0012] This bidirectional flow valve employs a dual-seal design using both O-rings and metal-coated seals. Under normal operating conditions, the O-rings perform the primary sealing task. When the O-rings age, wear, or fail, a miniature pressure sensor can monitor pressure changes within the pressure chamber in real time and alert for maintenance. Simultaneously, the metal-coated seal quickly takes over the sealing task, effectively preventing further fluid leakage. This enhances the sealing reliability of the outer valve body, extends the valve's service life, and reduces the safety risks caused by fluid leakage through an early warning mechanism, further adapting to the high reliability requirements of industrial production equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a bidirectional flow valve with redundant protection function proposed in this utility model. Figure 2 This is a cross-sectional structural diagram of a bidirectional flow valve structure with redundant protection function proposed in this utility model. Figure 3 This invention presents a schematic diagram of the connection structure between the B-direction sealing valve cone and the auxiliary adjusting nut B of a bidirectional flow valve structure with redundant protection function.

[0014] In the picture: 1. Outer valve body; 2. A-direction flow channel; 3. B-direction flow channel; 4. B-direction flow sealing cone valve; 5. A-direction adjusting nut; 6. First gear; 7. Bidirectional meshing gear; 8. Second gear; 9. Secondary adjusting nut A; 10. Torque compensation spring; 11. Spring one; 12. Steel ball seat; 13. A-direction sealing steel ball; 14. Spring two; 15. Spring seat; 16. B-direction adjusting nut; 17. Secondary adjusting nut B; 18. Telescopic top rod; 19. Positioning hole; 20. Sealing groove; 21. Sealing groove; 22. Miniature pressure sensor; 23. O-ring seal; 24. Metal-coated sealing ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0017] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0018] Example: Reference Figures 1-3A bidirectional flow valve structure with redundant protection function includes an outer valve body 1. An A-flow channel 2 and a B-flow channel 3 are provided on both sides of the outer valve body 1. Both the A-flow channel 2 and the B-flow channel 3 are connected to the interior of the outer valve body 1. A B-flow sealing cone valve 4 is fixedly connected to the contact surface between the inner wall of the outer valve body 1 and the A-flow channel 2. A threaded groove is provided on the inner wall of the B-flow sealing cone valve 4. An A-direction adjusting nut 5 is threadedly connected in the threaded groove. A first gear 6 is fixedly connected to one end of the A-direction adjusting nut 5. A second gear 8 is meshed with the outer surface of the first gear 6 through a bidirectional meshing gear 7. A secondary adjusting nut A9 is fixedly connected to the end of the second gear 8. A ring-shaped torque compensation spring 10 is provided in the middle of the bidirectional meshing gear 7. The end of the adjusting nut 5 in direction A is connected to a steel ball seat 12 via a spring 11. The steel ball seat 12 has a slot on the side away from the spring 11, and a sealing steel ball 13 in direction A is installed in the slot.

[0019] A spring seat 15 is connected to the side of the B-flow-to-the-sealing cone valve 4 via a spring 14. A B-direction adjusting nut 16 is fixedly connected to one side of the spring seat 15. A threaded groove is provided on the inner wall of the outer valve body 1, and a secondary adjusting nut B17 is threadedly connected to the threaded groove.

[0020] A telescopic rod 18 is fixedly connected to the side of the auxiliary adjusting nut B17 near the B-direction adjusting nut 16. A positioning hole 19 is provided on the side of the B-direction adjusting nut 16 to cooperate with the telescopic rod 18. The end of the telescopic rod 18 that can retract axially and is away from the auxiliary adjusting nut B17 passes through the positioning hole 19 and is connected to one side of the spring seat 15.

[0021] The outer wall of the outer valve body 1 is provided with a sealing groove 20 and a sealing groove 21. An annular pressure detection chamber is provided between the sealing groove 20 and the sealing groove 21. A miniature pressure sensor 22 is installed in the pressure detection chamber.

[0022] The interior of the sealing groove 20 is filled with an O-ring 23, and the interior of the sealing groove 21 is filled with a metal-clad sealing ring 24.

[0023] Torque sensors are installed on the inner walls of both the A-direction adjusting nut 5 and the B-direction adjusting nut 16.

[0024] In this embodiment, during normal operation of the bidirectional overflow valve, the operator rotates the A-direction adjusting nut 5 and the B-direction adjusting nut 16 using an external wrench. When the A-direction adjusting nut 5 rotates, it drives the first gear 6 on one side to rotate. The rotation of the first gear 6, through the bidirectional meshing gear 7, synchronously drives the second gear 8 and the auxiliary adjusting nut A9 to rotate. At this time, the torque compensation spring 10 is in its natural state, ensuring transmission efficiency. Although the auxiliary adjusting nut A9 does not perform active adjustment during rotation, the torque sensor monitors the normal torque range of the A-direction adjusting nut 5 and the B-direction adjusting nut 16 during rotation. At this time, the fluid pressure in the A-direction flow channel 2 acts on the fluid in the A-direction flow channel. The sealing steel ball 13, under the combined action of spring 11 and fluid pressure, tightly fits the sealing surface of the steel ball seat 12, thereby blocking the overflow of fluid in the A-direction channel 2. When the A-direction adjusting nut 5 is rotated, the A-direction adjusting nut 5 is squeezed to one side along the B-direction sealing cone valve 4 through the thread action. At this time, the greater the compression of spring 11, the greater the preload on the A-direction sealing steel ball 13. At this time, the fluid in the A-direction channel 2 needs a higher fluid pressure to push open the A-direction sealing steel ball 13, thereby achieving overflow. When the fluid overflows through the gap between the steel ball seat 12 and the A-direction sealing steel ball 13, the pressure in the A-direction channel is kept stable.

[0025] The fluid pressure in the B-direction channel 3 acts on the B-direction sealing cone valve 4. Under the combined action of the spring force of spring 14 and the fluid pressure, the B-direction sealing cone valve 4 tightly fits the sealing surface of the outer valve body 1, thereby blocking the overflow of fluid in the B-direction. When the B-direction adjusting nut 16 is rotated, it moves to one side along the threaded groove, thereby changing the compression of spring 14 and adjusting the preload of the B-direction sealing cone valve 4. The greater the compression of spring 14, the higher the overflow pressure in the B-direction; the smaller the compression, the lower the overflow pressure. When the fluid pressure in the B-direction exceeds the set overflow pressure, the fluid pressure pushes open the B-direction sealing cone valve 4. At this time, the fluid overflows through the gap between the B-direction sealing cone valve 4 and the outer valve body 1, achieving pressure stabilization in the B-direction.

[0026] Specifically, when the A-direction adjusting nut 5 and the B-direction adjusting nut 16 experience jamming or stripping during use, their rotational resistance will increase sharply. At the same time, when the torque sensor detects that the torque exceeds the preset fault threshold, the operator can rotate the secondary adjusting nut A9 and the secondary adjusting nut B17. When the secondary adjusting nut A9 rotates, the torque transmitted by the bidirectional meshing gear 7 gradually increases. Subsequently, the torque compensation spring 10 is compressed and stores elastic potential energy. When the elastic force of the torque compensation spring 10 and the driving force of the secondary adjusting nut A9 overcome the jamming resistance of the A-direction adjusting nut 5, the A-direction adjusting nut 5 begins to rotate, achieving "forced synchronous adjustment". After the jamming fault of the A-direction adjusting nut 5 is repaired, the torque compensation spring 10 automatically resets, and the bidirectional meshing gear 7 returns to the resistance-free synchronous transmission. At this time, the adjustment consistency of the A-direction adjusting nut 5 and the secondary adjusting nut A9 is not affected, achieving redundant adjustment while ensuring structural safety. When the auxiliary adjusting nut B17 is rotated, it moves axially along the threaded groove. As the auxiliary adjusting nut B17 moves, it drives the telescopic push rod 18 on one side to move to the same side. While the telescopic push rod 18 moves in the positioning hole 19, it pushes the spring seat 15 on one side, thereby driving the spring seat 15 to squeeze the second spring 14 to the side. This compresses the second spring 14 and adjusts the pressure, thus ensuring that the overflow adjustment pressure of the outer valve body 1 is not affected by the failure of the A-direction adjusting nut 5 and the B-direction adjusting nut 16. This allows the operator to independently adjust the overflow pressure during maintenance.

[0027] Furthermore, during operation, the O-ring 23 within the sealing groove 20 provides a seal, preventing fluid leakage from the mating surface of the outer valve body 1. At this time, the pressure in the pressure monitoring chamber remains relatively stable, within the normal ambient pressure range or a range of minor fluctuations. However, if the O-ring 23 fails to seal due to aging, wear, or other reasons, fluid begins to leak from the main seal and enter the pressure monitoring chamber. The miniature pressure sensor 22 within the pressure monitoring chamber detects a rapid increase in pressure, prompting the operator to promptly repair or replace it. Simultaneously, the metal-clad sealing ring 24 within the sealing groove 21 begins to take over the sealing task. Due to its superior sealing performance and durability, the metal-clad sealing ring 24 prevents further fluid leakage, thereby ensuring the sealing reliability of the outer valve body 1.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bidirectional flow valve structure with redundant protection function, comprising an outer valve body (1), characterized in that, The outer valve body (1) is provided with an A-flow channel (2) and a B-flow channel (3) on both sides. The A-flow channel (2) and the B-flow channel (3) are both connected to the interior of the outer valve body (1). The inner wall of the outer valve body (1) is fixedly connected to the contact surface of the A-flow channel (2) with the B-flow sealing cone valve (4). The inner wall of the B-flow sealing cone valve (4) is provided with a threaded groove. The A-direction adjusting nut (5) is threadedly connected in the threaded groove. One end of the A-direction adjusting nut (5) is fixedly connected to a first gear (6). The outer surface of the first gear (6) is meshed with a second gear (8) through a bidirectional meshing gear (7). The end of the second gear (8) is fixedly connected to a secondary adjusting nut A (9). The middle part of the bidirectional meshing gear (7) is provided with an annular torque compensation spring (10). The end of the A-direction adjusting nut (5) is connected to a steel ball seat (12) via a spring (11). A slot is provided on the side of the steel ball seat (12) away from the spring (11), and an A-direction sealing steel ball (13) is provided in the slot.

2. The bidirectional flow valve structure with redundant protection function according to claim 1, characterized in that, One side of the B-flow sealing cone valve (4) is connected to a spring seat (15) via a spring two (14). One side of the spring seat (15) is fixedly connected to a B-direction adjusting nut (16). The inner wall of the outer valve body (1) is provided with a threaded groove, and a secondary adjusting nut B (17) is threadedly connected in the threaded groove.

3. The bidirectional flow valve structure with redundant protection function according to claim 2, characterized in that, The auxiliary adjusting nut B (17) is fixedly connected to a telescopic rod (18) on the side near the B-direction adjusting nut (16). A positioning hole (19) is provided on one side of the B-direction adjusting nut (16) to cooperate with the telescopic rod (18). The telescopic rod (18) can retract axially and its end away from the auxiliary adjusting nut B (17) passes through the positioning hole (19) and is connected to one side of the spring seat (15).

4. The bidirectional flow valve structure with redundant protection function according to claim 1, characterized in that, The outer wall of the outer valve body (1) is provided with a sealing groove (20) and a sealing groove (21). An annular pressure detection chamber is provided between the sealing groove (20) and the sealing groove (21). A miniature pressure sensor (22) is provided in the pressure detection chamber.

5. The bidirectional flow valve structure with redundant protection function according to claim 4, characterized in that, The sealing groove (20) is filled with an O-ring (23), and the sealing groove (21) is filled with a metal-coated sealing ring (24).

6. The bidirectional flow valve structure with redundant protection function according to claim 2, characterized in that, Torque sensors are provided on the inner walls of both the A-direction adjusting nut (5) and the B-direction adjusting nut (16).

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